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Similarweb
SMWB

Overview Fund Activity

109 hedge funds and large institutions have $371M invested in Similarweb in 2025 Q1 according to their latest regulatory filings, with 25 funds opening new positions, 32 increasing their positions, 40 reducing their positions, and 26 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
109
Holders Change
-3
Holders Change %
-2.68%
% of All Funds
1.48%
Holding in Top 10
5
Holding in Top 10 Change
-2
Holding in Top 10 Change %
-28.57%
% of All Funds
0.07%
New
25
Increased
32
Reduced
40
Closed
26
Calls
$9.35M
Puts
$6.27M
Net Calls
+$3.08M
Net Calls Change
-$10.8M

Top Buyers

1
CCPM
Cooper Creek Partners Management
New York
+$9.87M
2
MIFH
Migdal Insurance & Financial Holdings
Israel
+$8.68M
3
Wellington Management Group
Wellington Management Group
Massachusetts
+$7.36M
4
T. Rowe Price Investment Management
T. Rowe Price Investment Management
Maryland
+$6.09M
5
American Century Companies
American Century Companies
Missouri
+$6.01M

Top Sellers

1
NCGI
Next Century Growth Investors
Minnesota
-$9.91M
2
Walleye Capital
Walleye Capital
New York
-$6.78M
3
Acadian Asset Management
Acadian Asset Management
Massachusetts
-$5.8M
4
Alyeska Investment Group
Alyeska Investment Group
Illinois
-$5.31M
5
SSA
Schonfeld Strategic Advisors
New York
-$3.96M
Name Holding Trade Value Shares
Change 		Shares
Change %
PAWC
26
P.A.W. Capital
Connecticut
$2.48M -$827K -100,000 -25%
HIM
27
Herald Investment Management
United Kingdom
$2.48M +$2.48M +300,000 New
SMTF
28
Sphera Management Technology Funds
Israel
$2.45M +$1.1M +132,610 +81%
Renaissance Technologies
29
Renaissance Technologies
New York
$2.3M -$849K -102,600 -27%
State Street
30
State Street
Massachusetts
$2.27M -$102K -12,288 -4%
Russell Investments Group
31
Russell Investments Group
United Kingdom
$2.24M -$718K -86,779 -24%
EIM
32
Essex Investment Management
Massachusetts
$2.17M -$16.6K -2,006 -0.8%
State of Tennessee, Department of Treasury
33
State of Tennessee, Department of Treasury
Tennessee
$2.07M +$2M +241,900 +3,083%
TAM
34
Telemark Asset Management
Massachusetts
$1.9M -$579K -70,000 -23%
TI
35
Trexquant Investment
Connecticut
$1.77M +$903K +109,208 +105%
JPMorgan Chase & Co
36
JPMorgan Chase & Co
New York
$1.75M +$198K +23,974 +13%
CSS
37
Cubist Systematic Strategies
Connecticut
$1.53M +$683K +82,536 +80%
Acadian Asset Management
38
Acadian Asset Management
Massachusetts
$1.53M -$5.8M -703,577 -79%
Voloridge Investment Management
39
Voloridge Investment Management
Florida
$1.35M +$1.35M +162,704 New
Ameriprise
40
Ameriprise
Minnesota
$1.21M +$1.21M +145,865 New
Bank of America
41
Bank of America
North Carolina
$1.16M -$1.13M -136,981 -49%
Two Sigma Investments
42
Two Sigma Investments
New York
$1.07M -$1.04M -126,309 -49%
AIM
43
ARK Investment Management
Florida
$999K -$686K -82,923 -41%
OC
44
Oppenheimer & Co
New York
$869K -$50.5K -6,104 -5%
PVM
45
Palogic Value Management
Texas
$864K +$864K +104,423 New
PP
46
PDT Partners
New York
$783K +$471K +56,991 +151%
William Blair & Company
47
William Blair & Company
Illinois
$723K -$86.5K -10,458 -11%
Calamos Advisors
48
Calamos Advisors
Illinois
$696K -$719K -86,994 -51%
Northern Trust
49
Northern Trust
Illinois
$686K +$138K +16,649 +25%
LOAMU
50
Lombard Odier Asset Management (USA)
New York
$662K +$662K +80,000 New
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